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By the 2010s, the product was found in the US market under the name FONDAG cement (FOND Aluminous Aggregate), sometimes referred to as ALAG (ALuminous AGgregate). FONDAG cement is a mix of up to 40 percent alumina, and is stable at high temperatures and thermal cycling from −184–1,093 °C (−300–2,000 °F; 89–1,400 K; 160–2,500 °R) [4]
SAL Yokohama Alumina 0 100% Showa Denko KK [5] Japan Shimizu Alumina 0 100% Nippon Light Metal [5] (United Nations 2000) Kazakhstan Pavlodar Alumina 1,540 100% Alkaz [5] (United Nations 2000) Montenegro Podgorica Alumina 0 Kombinat Aluminijuma Podgorica, CAV [5] (United Nations 2000) Romania Oradea 400 shut down in 2002 Romania Tulcea
Calcium aluminate bioceramic material - (alumina cement in minerals, calcium aluminate cements in bioceramics) Alumina is an initial fast setting element and high compressive strength. It has been used as dental products as luting agent. Calcium aluminate cement (bioceramic) has been developed for dental products and root-end filling material.
There is a need for selecting the right geopolymer cement category. The 2012 State of the Geopolymer R&D, [30] suggested to select two categories, namely: type 2 slag/fly ash-based geopolymer cement: fly ashes are available in the major emerging countries;
In keeping with its high basicity, tricalcium aluminate reacts most strongly with water of all the calcium aluminates, and it is also the most reactive of the Portland clinker phases. Its hydration to phases of the form Ca 2 AlO 3 (OH) · n H 2 O leads to the phenomenon of "flash set" (instantaneous set), and a large amount of heat is generated.
Calcium aluminates can form complex salts in combination with different types of anions.Two series of calcium aluminates are known in cement chemistry: AFm and AFt phases, being respectively mono- or tri-substituted with a given divalent anion X (e.g. SO 2− 4, CO 2− 3, or hosting a divalent impurity such as SeO 2− 4 [3]...), or with two units of a monovalent anion, e.g. OH −, Cl − ...